Watermarking device



F. P. KLUND.

WATERMARKING DEVICE.

APPLICATION FILED JUNE 1. 1920.

1,386,41 1, Patentd Aug. 2, 1921.

UNITED STATES PATENT OFFICE.

FREDERIC P. KLUNI), OF ERIE, PENNSYLVANIA, ASSIGNOR- TO HAMMERMILL PAPERCOMPANY, OF ERIE, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

'WATEBMARKING DEVICE.

Specification of Letters Patent.

Patented Aug. 2, 1921.

To all whom. it may concern:

Be it known that I, Fnnnnnro P. KLUND, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsylvania, haveinvented certain new and useful Im rovements in Watermarking Devices;and do hereby declare the fol-. lowing to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters of reference markedthereon, forming part of this specification.

My invention relates to improvements in paper watermarking rollsoperating on the sheet against one of the press, drier or other rolls ofa paper making machine, to watermark papers during the process of theirmanufacture.

Heretofore watermarking rolls for this purpose have been provided withwatermarking devices secured to the peripheries thereof adapted tocontact with the damp-sheet and impress the mark therein. These marksare spaced some distance apart on the roll, and in order to prevent therolls contacting with the sheet between the marking devices, and toprovide for the continuous rotation of the roll, continuous annularrings have been provided on the roll at the sides of the marking devicesthereon, which operate on bond and other smooth surfaced papers tosuccessfully watermark the same without leaving any trace thereof of thecontact of the rings therewith. When, however, it is desired towatermark crape and other uneven surfaced papers the rings at the sidesof the watermarking devices operate to leave their imprint upon thepaper insuch a manner as to flatten the surface of the sheet contactingtherewith and make it impossible to succemfully watermark such paperstherewith.

To overcome this difliculty I make the rolls with the usual markingdevices thereon, spaced apart circumferentially around the roll at suchdistances apart as is desirable, and without supporting rings at thesides thereof, and in the spaces betweenthe markin devices I placesupporting devices of any esired design which will sufliciently fill thespace between the marking devices so as to provide a bearing surface forthe roll between the marking devices; and while these supporting deviceswill be impressed upon the papers marked, they are so designed as to bemore or less ornamental and not detract from the appearance of thewatermark in the paper, when finished. In this manner I can readily andsuccessfully mark crape and other rough surfaced papers withoutmarringor otherwise injuring the surface thereof, which I am not aware ofheretofore having been done by means of known watermarking device.

an 'Ihe features of my invention are hereinafter fully set forth anddescribed and illustrated in the accompanying drawings in which:

Figure 1, is a plan view of a section of the surface of a watermarkingroll illustrating my invention.

Fig. 2, is an end view of the shell of such a roll.

In these drawings I have not illustrated the construction or mounting ofthe marking-roll, as these are matters of common lmowledge in the artand form no part of my invention.

In the drawings A indicates a ring or band, preferably of rubber orother resilient substance adapted to fit around a marking roll (notshown), B indicates watermarking devices secured to the surface of thering A, spaced at a suitable distance apart circumferentially as tolocate the marks in the paper as desired.

In the spaces A between the marking devices B on said ring, I securesupporting devices D. These supporting devicesI preferably make ofornamental design of any convenient shape as will so occupy the spacebetween the marking devices as to furnish such a more or less continuoussupporting surface that no art of the'roll except the marking devicesand ornamental supportin devices D will contact with the paper beingwatermarked, during the operation of watermarking the same. In thismanner I am enabled to successfully watermark crape and other roughsurfaced papers of that type without injuring .or marring the surclaimas new and desire to secure by Letters Patent is 1. In a roll formarking crape paper, spaced marking devices on its periphery 'adapted tocontact with the paper, and

means in line with the marking devices adapted to support the roll fromcontact with the paper when the marking devices thereon are out ofcontact therewith.

2. Ina roll for marking crape paper during the process of itsmanufacture, a line of spaced marking devices around the circumferenceof the roll adapted to contact with and impress the same upon a sheet ofdamp crape paper along the lines of the mark, and

FREDERIG P. KLUND.

